支付宝及微信支付

一、支付宝

添加sdk

compile group: 'com.alipay.sdk', name: 'alipay-sdk-java', version: '3.0.0'

服务端生成请求信息:

//实例化客户端
        AlipayClient alipayClient = new DefaultAlipayClient("https://openapi.alipay.com/gateway.do",
                "appid",
                "privatekey",
                "json",
                "utf-8",
                "alipayPublickey",
                "RSA2");
        //实例化具体API对应的request类,类名称和接口名称对应,当前调用接口名称:alipay.trade.app.pay
        AlipayTradeAppPayRequest request = new AlipayTradeAppPayRequest();
        //SDK已经封装掉了公共参数,这里只需要传入业务参数。以下方法为sdk的model入参方式(model和biz_content同时存在的情况下取biz_content)。
        AlipayTradeAppPayModel model = new AlipayTradeAppPayModel();
        model.setBody(reqPayMethodModel.getBody());
        model.setSubject(reqPayMethodModel.getTitle());
        model.setOutTradeNo(getUUID());
        model.setTimeoutExpress("30m");
        model.setTotalAmount(reqPayMethodModel.getPrice());
        model.setProductCode("QUICK_MSECURITY_PAY");
        request.setBizModel(model);
        request.setNotifyUrl("回调网址");
        try {
            //这里和普通的接口调用不同,使用的是sdkExecute
            AlipayTradeAppPayResponse response = alipayClient.sdkExecute(request);
//            System.out.println(response.getBody());//就是orderString 可以直接给客户端请求,无需再做处理。
            RespAlipayModel respAlipayModel = new RespAlipayModel();
            respAlipayModel.setAlipayStr(response.getBody());
            return ResponseModel.buildOk(respAlipayModel);
        } catch (AlipayApiException e) {
            e.printStackTrace();
            System.out.println("支付查询失败:" + e);
            return ResponseModel.buildServiceError();
        }

二、微信支付

添加相关包

compile group: 'org.jdom', name: 'jdom', version: '1.1.3'
compile group: 'org.apache.commons', name: 'commons-lang3', version: '3.0'

统一下单

工具通用类

package com.tuoyou.ble1.util;


import org.apache.http.Consts;
import org.apache.http.HttpEntity;
import org.apache.http.client.methods.CloseableHttpResponse;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.conn.ssl.SSLConnectionSocketFactory;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.CloseableHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.ssl.SSLContexts;
import org.apache.http.util.EntityUtils;

import javax.net.ssl.SSLContext;
import java.io.*;
import java.net.ConnectException;
import java.net.HttpURLConnection;
import java.net.URL;
import java.security.KeyStore;
import java.util.*;

import org.jdom.Attribute;
import org.jdom.Comment;
import org.jdom.Document;
import org.jdom.Element;
import org.jdom.JDOMException;
import org.jdom.input.SAXBuilder;
import org.jdom.output.Format;
import org.jdom.output.XMLOutputter;

/**
 * @Author: 紫薇大舅
 * @Description:
 * @Date: Create in 上午10:55 2018/5/6
 */
public class CommonUtil {

    //微信参数配置
    //    public static String API_KEY = "秘钥";

    //随机字符串生成
    public static String getRandomString(int length) { //length表示生成字符串的长度
        String base = "abcdefghijklmnopqrstuvwxyz0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";
        Random random = new Random();
        StringBuffer sb = new StringBuffer();
        for (int i = 0; i < length; i++) {
            int number = random.nextInt(base.length());
            sb.append(base.charAt(number));
        }
        return sb.toString();
    }

    //请求xml组装
    public static String getRequestXml(SortedMap<String, Object> parameters) {
        StringBuffer sb = new StringBuffer();
        sb.append("<xml>");
        Set es = parameters.entrySet();
        Iterator it = es.iterator();
        while (it.hasNext()) {
            Map.Entry entry = (Map.Entry) it.next();
            String key = (String) entry.getKey();
            String value = (String) entry.getValue();
            if ("attach".equalsIgnoreCase(key) || "body".equalsIgnoreCase(key) || "sign".equalsIgnoreCase(key)) {
                sb.append("<" + key + ">" + "<![CDATA[" + value + "]]></" + key + ">");
            } else {
                sb.append("<" + key + ">" + value + "</" + key + ">");
            }
        }
        sb.append("</xml>");
        return sb.toString();
    }

    //生成签名
    public static String createSign(String characterEncoding, SortedMap<String, Object> parameters, String apiKey) {
        StringBuffer sb = new StringBuffer();
        Set es = parameters.entrySet();
        Iterator it = es.iterator();
        while (it.hasNext()) {
            Map.Entry entry = (Map.Entry) it.next();
            String k = (String) entry.getKey();
            Object v = entry.getValue();
            if (null != v && !"".equals(v) && !"sign".equals(k) && !"key".equals(k)) {
                sb.append(k + "=" + v + "&");
            }
        }
        sb.append("key=" + apiKey);
//        System.out.println(sb.toString());
        String sign = MD5Util.MD5Encode(sb.toString(), characterEncoding).toUpperCase();
        return sign;
    }

    public static boolean isTenpaySign(Map<String, String> map, String apiKey) throws UnsupportedEncodingException {
        String charset = "utf-8";
        String signFromAPIResponse = map.get("sign");
        if (signFromAPIResponse == null || signFromAPIResponse.equals("")) {
//            System.out.println("API返回的数据签名数据不存在,有可能被第三方篡改!!!");
            return false;
        }
//        System.out.println("服务器回包里面的签名是:" + signFromAPIResponse);
        //过滤空 设置 TreeMap
        SortedMap<String, String> packageParams = new TreeMap<>();
        for (String parameter : map.keySet()) {
            String parameterValue = map.get(parameter);
            String v = "";
            if (null != parameterValue) {
                v = parameterValue.trim();
            }
            packageParams.put(parameter, v);
        }

        StringBuffer sb = new StringBuffer();
        Set es = packageParams.entrySet();
        Iterator it = es.iterator();
        while (it.hasNext()) {
            Map.Entry entry = (Map.Entry) it.next();
            String k = (String) entry.getKey();
            String v = (String) entry.getValue();
            if (!"sign".equals(k) && null != v && !"".equals(v)) {
                sb.append(k + "=" + v + "&");
            }
        }
        sb.append("key=" + apiKey);

        //将API返回的数据根据用签名算法进行计算新的签名,用来跟API返回的签名进行比较

        //算出签名
        String resultSign = "";
        String tobesign = sb.toString();
        if (null == charset || "".equals(charset)) {
            resultSign = MD5Util.MD5Encode(tobesign, charset).toUpperCase();
        } else {
            resultSign = MD5Util.MD5Encode(tobesign, charset).toUpperCase();
        }
        String tenpaySign = packageParams.get("sign").toUpperCase();
        return tenpaySign.equals(resultSign);
    }

    //请求方法
    public static String httpsRequest(String requestUrl, String requestMethod, String outputStr) {
        try {

            URL url = new URL(requestUrl);
            HttpURLConnection conn = (HttpURLConnection) url.openConnection();

            conn.setDoOutput(true);
            conn.setDoInput(true);
            conn.setUseCaches(false);
            // 设置请求方式(GET/POST)
            conn.setRequestMethod(requestMethod);
            conn.setRequestProperty("content-type", "application/x-www-form-urlencoded");
            // 当outputStr不为null时向输出流写数据
            if (null != outputStr) {
                OutputStream outputStream = conn.getOutputStream();
                // 注意编码格式
                outputStream.write(outputStr.getBytes("UTF-8"));
                outputStream.close();
            }
            // 从输入流读取返回内容
            InputStream inputStream = conn.getInputStream();
            InputStreamReader inputStreamReader = new InputStreamReader(inputStream, "utf-8");
            BufferedReader bufferedReader = new BufferedReader(inputStreamReader);
            String str = null;
            StringBuffer buffer = new StringBuffer();
            while ((str = bufferedReader.readLine()) != null) {
                buffer.append(str);
            }
            // 释放资源
            bufferedReader.close();
            inputStreamReader.close();
            inputStream.close();
            inputStream = null;
            conn.disconnect();
            return buffer.toString();
        } catch (ConnectException ce) {
//            System.out.println("连接超时:{}" + ce);
        } catch (Exception e) {
//            System.out.println("https请求异常:{}" + e);
        }
        return null;
    }

    //退款的请求方法
    public static String httpsRequest2(String requestUrl, String requestMethod, String outputStr) throws Exception {
        KeyStore keyStore = KeyStore.getInstance("PKCS12");
        StringBuilder res = new StringBuilder("");
        FileInputStream instream = new FileInputStream(new File("/home/apiclient_cert.p12"));
        try {
            keyStore.load(instream, "".toCharArray());
        } finally {
            instream.close();
        }

        // Trust own CA and all self-signed certs
        SSLContext sslcontext = SSLContexts.custom().loadKeyMaterial(keyStore, "1313329201".toCharArray()).build();
        // Allow TLSv1 protocol only
        SSLConnectionSocketFactory sslsf = new SSLConnectionSocketFactory(sslcontext, new String[] { "TLSv1" }, null, SSLConnectionSocketFactory.BROWSER_COMPATIBLE_HOSTNAME_VERIFIER);
        CloseableHttpClient httpclient = HttpClients.custom().setSSLSocketFactory(sslsf).build();
        try {

            HttpPost httpost = new HttpPost("https://api.mch.weixin.qq.com/secapi/pay/refund");
            httpost.addHeader("Connection", "keep-alive");
            httpost.addHeader("Accept", "*/*");
            httpost.addHeader("Content-Type", "application/x-www-form-urlencoded; charset=UTF-8");
            httpost.addHeader("Host", "api.mch.weixin.qq.com");
            httpost.addHeader("X-Requested-With", "XMLHttpRequest");
            httpost.addHeader("Cache-Control", "max-age=0");
            httpost.addHeader("User-Agent", "Mozilla/4.0 (compatible; MSIE 8.0; Windows NT 6.0) ");
            StringEntity entity2 = new StringEntity(outputStr, Consts.UTF_8);
            httpost.setEntity(entity2);
//            System.out.println("executing request" + httpost.getRequestLine());

            CloseableHttpResponse response = httpclient.execute(httpost);

            try {
                HttpEntity entity = response.getEntity();

//                System.out.println("----------------------------------------");
//                System.out.println(response.getStatusLine());
                if (entity != null) {
//                    System.out.println("Response content length: " + entity.getContentLength());
                    BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(entity.getContent()));
                    String text = "";
                    res.append(text);
                    while ((text = bufferedReader.readLine()) != null) {
                        res.append(text);
//                        System.out.println(text);
                    }

                }
                EntityUtils.consume(entity);
            } finally {
                response.close();
            }
        } finally {
            httpclient.close();
        }
        return res.toString();

    }

    //xml解析
    public static Map doXMLParse(String strxml) throws JDOMException, IOException {
        strxml = strxml.replaceFirst("encoding=\".*\"", "encoding=\"UTF-8\"");

        if (null == strxml || "".equals(strxml)) {
            return null;
        }

        Map m = new HashMap();

        InputStream in = new ByteArrayInputStream(strxml.getBytes("UTF-8"));
        SAXBuilder builder = new SAXBuilder();
        Document doc = builder.build(in);
        Element root = doc.getRootElement();
        List list = root.getChildren();
        Iterator it = list.iterator();
        while (it.hasNext()) {
            Element e = (Element) it.next();
            String k = e.getName();
            String v = "";
            List children = e.getChildren();
            if (children.isEmpty()) {
                v = e.getTextNormalize();
            } else {
                v = getChildrenText(children);
            }

            m.put(k, v);
        }

        //关闭流
        in.close();

        return m;
    }

    public static String getChildrenText(List children) {
        StringBuffer sb = new StringBuffer();
        if (!children.isEmpty()) {
            Iterator it = children.iterator();
            while (it.hasNext()) {
                Element e = (Element) it.next();
                String name = e.getName();
                String value = e.getTextNormalize();
                List list = e.getChildren();
                sb.append("<" + name + ">");
                if (!list.isEmpty()) {
                    sb.append(getChildrenText(list));
                }
                sb.append(value);
                sb.append("</" + name + ">");
            }
        }

        return sb.toString();
    }
}

MD5类

package com.tuoyou.ble1.util;

import java.security.MessageDigest;

/**
 * @Author: 紫薇大舅
 * @Description:
 * @Date: Create in 上午10:54 2018/5/6
 */
public class MD5Util {

    private static String byteArrayToHexString(byte b[]) {
        StringBuffer resultSb = new StringBuffer();
        for (int i = 0; i < b.length; i++)
            resultSb.append(byteToHexString(b[i]));

        return resultSb.toString();
    }

    private static String byteToHexString(byte b) {
        int n = b;
        if (n < 0)
            n += 256;
        int d1 = n / 16;
        int d2 = n % 16;
        return hexDigits[d1] + hexDigits[d2];
    }

    public static String MD5Encode(String origin, String charsetname) {
        String resultString = null;
        try {
            resultString = new String(origin);
            MessageDigest md = MessageDigest.getInstance("MD5");
            if (charsetname == null || "".equals(charsetname))
                resultString = byteArrayToHexString(md.digest(resultString.getBytes()));
            else
                resultString = byteArrayToHexString(md.digest(resultString.getBytes(charsetname)));
        } catch (Exception exception) {
        }
        return resultString;
    }

    private static final String hexDigits[] = { "0", "1", "2", "3", "4", "5", "6", "7", "8", "9", "a", "b", "c", "d", "e", "f" };
}

微信统一下单接口

        String appId = "appid";
        String mchId = "商户号";
        String apiKey = "秘钥";

        SortedMap<String, Object> parameterMap = new TreeMap<String, Object>();
        parameterMap.put("appid", appId);
        parameterMap.put("mch_id", mchId);
        parameterMap.put("nonce_str", CommonUtil.getRandomString(32));
        parameterMap.put("body", reqPayMethodModel.getTitle());
        parameterMap.put("out_trade_no", getUUID());
        parameterMap.put("fee_type", "CNY");

        parameterMap.put("total_fee", reqPayMethodModel.getPrice());
        parameterMap.put("spbill_create_ip", reqPayMethodModel.getIp());

        parameterMap.put("notify_url", "回调地址");//"http://xxx.com"
        parameterMap.put("trade_type", "APP");
        String sign = CommonUtil.createSign("UTF-8", parameterMap, apiKey);
        parameterMap.put("sign", sign);

        String requestXML = CommonUtil.getRequestXml(parameterMap);
        String result = CommonUtil.httpsRequest("https://api.mch.weixin.qq.com/pay/unifiedorder", "POST", requestXML);
        Map<String, String> map = null;
        SortedMap<String, Object> signParam = new TreeMap<String, Object>();
        try {
            map = CommonUtil.doXMLParse(result);
            String return_code = map.get("return_code");
            String prepay_id = null;
            if (return_code.contains("SUCCESS")) {
                prepay_id = map.get("prepay_id");//获取到prepay_id
            }
            long currentTimeMillis = System.currentTimeMillis();//生成时间戳
            long second = currentTimeMillis / 1000L;//(转换成秒)
            String seconds = String.valueOf(second).substring(0, 10); //截取前10位

            signParam.put("appid", appId);//app_id
            signParam.put("package", "Sign=WXpay");//默认sign=WXPay
            signParam.put("prepayid", prepay_id);
            signParam.put("noncestr", CommonUtil.getRandomString(32));//自定义不重复的长度不长于32位
            signParam.put("timestamp", seconds);//北京时间时间戳
//            signParam.put("signType", "MD5");
            signParam.put("partnerid", mchId);
            String signAgain = CommonUtil.createSign("", signParam, apiKey);//再次生成签名
            signParam.put("paySign", signAgain);

            RespWxPayModel respWxPayModel = new RespWxPayModel();
            respWxPayModel.setSignParam(signParam);


            return ResponseModel.buildOk(respWxPayModel);
        } catch (Exception e) {
            return ResponseModel.buildServiceError();
        }
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